/**
 * Type of the proxy. Either SOCKS4 or SOCKS5
 * @enum
 */
export declare enum ProxyType {
    /**
     * SOCKS4 type of proxy
     */
    SOCKS4 = 0,
    /**
     * SOCKS5 type of proxy
     */
    SOCKS5 = 1
}
/**
 * Proxy related data
 * @interface
 *
 */
export interface ProxyData {
    /**
     * Proxy IP
     */
    ip: string;
    /**
     * Proxy port
     */
    port: number;
    /**
     * Username to connect to the proxy
     */
    username?: string | null;
    /**
     * Password to connect to the proxy
     */
    password?: string | null;
    /**
     * {@link ProxyType}
     */
    type: ProxyType;
}
/**
 * WhoIs options
 * @interface
 */
export interface WhoIsOptions {
    /**
     * TLD of the domain. If the {@link tld} is not provided (or null), then it will be automatically determined as to the given domain name
     */
    tld?: string | null;
    /**
     * The encoding type used for WhoIs server and response. By default UTF-8 is used.
     */
    encoding?: string | null;
    /**{@link ProxyData} */
    proxy?: ProxyData | null;
    /**
     * The WhoIs server to collect data from. If not provided, the server will automatically determined using the {@link tld}
     */
    server?: string | null;
    /**
     * The port of the WhoIs server. By default, port 43 is used.
     */
    serverPort?: number | null;
    /**
     * Which data needs to be extracted/parsed from the WhoIs response.
     * An object can be passed which contains keys of the fields of the WhoIs response.
     * A copy of the provided object will be returned with the values filled for the provided keys.
     *
     * The keys can have default value of empty string. However, if the WhoIs response has multiple values for the same field (eg: 'Domain Status'),
     * then all the values can be collected by providing a default value of an Array([]).
     *
     * Following example shows an object used to collect 'Domain Name', 'Domain Status' (multiple values) and 'Registrar' from WhoIs response
     *
     * @example {'Domain Name': '', 'Domain Status': [], 'Registrar': ''}
     */
    parseData?: Object | null;
}
/**
 * Response returned from whois function. Contains the raw text from WhoIs server and parsed/fornatted WhoIs data (if parsed is true)
 *
 * @interface
 */
export interface WhoIsResponse {
    /**
     * Raw text response from WhoIs server
     */
    _raw: string;
    /**
     * Parsed/Formatted key-value pairs of the response (if parsed is true)
     */
    parsedData: any | null;
}
/**
 * Parse collected raw WhoIs data
 *
 * @class
 */
export declare class WhoIsParser {
    /**
     * Iterated through the complete text and returns extracted values
     *
     * @param rawData raw text from WhoIs server
     * @param outputData Data which needs to be extracted from the raw text (key/value pairs). Keys are used to extract from raw text and values are filled.
     * @returns Filled {@link outputData}
     */
    private static iterParse;
    /**
     * Parse the raw WhoIs text and returns extracted values
     *
     * @param rawData raw text from WhoIs server
     * @param outputData Data which needs to be extracted from the raw text (key/value pairs). Keys are used to extract from raw text and values are filled.
     * @returns Filled {@link outputData}
     */
    static parseData(rawData: string, outputData: any | null): any;
}
/**
 * Connects to the provided {@link server}:{@link port} through TCP (through a proxy if a proxy is given), run the WhoIs query and returns the response
 *
 * @param domain Domain name
 * @param queryOptions Query options which can be used with the specific WhoIs server to get the complete response
 * @param server WhoIs server
 * @param port WhoIs server port
 * @param encoding Encoding used by the WhoIs server
 * @param proxy {@link ProxyData}
 * @returns The {string} WhoIs response for the query. Empty string is returned for errors
 */
export declare function tcpWhois(domain: string, queryOptions: string, server: string, port: number, encoding: string, proxy: ProxyData | null): Promise<string>;
/**
 * Collect WhoIs data for the mentioned {@link domain}. Parse the reveived response if {@link parse} is true, accordingly.
 *
 * @param domain Domain name
 * @param parse Whether the raw text needs to be parsed/formatted or not
 * @param options {@link WhoIsOptions}
 * @returns {@link WhoIsResponse}
 */
export declare function whois(domain: string, parse?: boolean, options?: WhoIsOptions | null): Promise<WhoIsResponse>;
/**
 * Collects (and parse/format if set to be true) for the provided {@link domains}. If {@link parallel} is set to be true, multiple threads will be used to batch process the domains according to {@link threads} mentioned.
 * If <i>options.parsedData</i> is mentioned, then it will be used to parse <b>all</b> the responses.
 * If a proxy is mentioned in {@link options}, then the proxy will be used to collect <b>all</b> the WhoIs data.
 *
 * @param domains Domains Names
 * @param parallel Whether data should be collected parallally or not
 * @param threads Batch size (for parallel processing)
 * @param parse Whether the raw text needs to be parsed/formatted or not
 * @param options {@link WhoIsOptions}
 * @returns Array of {@link WhoIsResponse} for all the domains. Order is not guaranteed
 */
export declare function batchWhois(domains: string[], parallel?: boolean, threads?: number, parse?: boolean, options?: WhoIsOptions | null): Promise<WhoIsResponse[]>;